I know the basics because vi ships with practically ever *nix (unlike Emacs), so it's there for when I need to edit config files, but I do 97% of my real work in something more like IntelliJ, so there just aren't big returns for getting better at vim.
My professor takes an excrutiatingly long time to edit files in class using keyb + mouse in IntelliJ. I am frequently waiting on him to finish up because of the vim plugin for IntelliJ. The speed of editing with vim, once you learn it, is shocking.
The Vi bindings in IntelliJ-based IDEs are pretty damn good in my experience. Certainly I feel a lot happier { and }'ing my way around, and having my `ce` and `gg` and `C`, in Rider.
